Aliens are invading earth, the battle is already lost and it's only a matter of time until they begin harvesting the planet for its resources...Well you being one of the few remaining members of the human military aren't too happy with that. You know there was an experimental bomb that is being kept and you know how to activate it. It wasn't used in the war because it was so powerful that using it would destroy the entire planet and everything else in the solar system. Well you fell like you'd rather blow up everything than let the aliens have it. Only problem is the building were the bomb is being kept has already fallen to the aliens. First you have to make your way there and clear it out. Then you have to defend the bomb until it explodes taking everyone out with a bang.